Record envelope, standing records and threshold days for Underwood 12 W (USC00328877), North Dakota, United States, with 43 years of record.
Key Facts for Underwood 12 W
Underwood 12 W (USC00328877) is a weather station in North Dakota, United States at 47.43 latitude and -101.40 longitude, 534 m (1,752 ft) above sea level.
The station reports from 1912 to 1954, 43 years of record.
1,464 records set at Underwood 12 W still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Underwood 12 W set a daily record precipitation of 24.1 mm (0.9 in) on 14 June 1954.
About the Station
Location: North Dakota, United States, 47.43 latitude, -101.40 longitude.
Elevation: 534 m (1,752 ft).
Period of record: 1912 to 1954, 43 years.
Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Underwood 12 W. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Underwood 12 W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-43.3 C (-45.9 F)
n/a
n/a
Feb
17.8 C (64.0 F)
-47.8 C (-54.0 F)
n/a
n/a
Mar
26.7 C (80.1 F)
-33.9 C (-29.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-21.1 C (-6.0 F)
n/a
n/a
May
38.9 C (102.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
41.7 C (107.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
45.6 C (114.1 F)
1.7 C (35.1 F)
n/a
n/a
Aug
42.8 C (109.0 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-11.1 C (12.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-18.3 C (-0.9 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-32.8 C (-27.0 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-37.2 C (-35.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Underwood 12 W still stand. 1936 holds the most, with 89.
Standing records at Underwood 12 W by the year they were set
Year set
Standing records
1912
10
1922
36
1923
37
1924
48
1925
61
1926
48
1927
66
1928
43
1929
46
1930
38
1931
75
1932
38
1933
42
1934
72
1935
41
1936
89
1937
59
1938
22
1939
51
1940
33
1941
31
1942
44
1943
31
1944
28
1945
41
1946
30
1947
29
1948
34
1949
47
1950
64
1951
50
1952
21
1953
27
1954
32
All-Time Record Progression
1 new records
1 all-time records were set at Underwood 12 W between 21 January 1954 and 21 January 1954. Each dot is a new record.
When Underwood 12 W set new all-time records
Date
Kind
Detail
1954-01-21
Record low maximum temperature
Record low maximum temperature -30.0 C (-22.0 F)
Wettest Day of Each Month
Aug: 81.3 mm (3.2 in)
The wettest day on record for each calendar month at Underwood 12 W. The most was 81.3 mm (3.2 in) on 24 August 1914.
Record daily precipitation for each month at Underwood 12 W
Month
Record daily precipitation (mm)
Date
Jan
10.2 mm (0.4 in)
14 January 1947
Feb
20.3 mm (0.8 in)
28 February 1951
Mar
20.3 mm (0.8 in)
26 March 1950
Apr
28.4 mm (1.1 in)
18 April 1925
May
48.3 mm (1.9 in)
27 May 1912
Jun
58.4 mm (2.3 in)
1 June 1925
Jul
79.8 mm (3.1 in)
27 July 1918
Aug
81.3 mm (3.2 in)
24 August 1914
Sep
44.5 mm (1.8 in)
4 September 1941
Oct
37.1 mm (1.5 in)
8 October 1924
Nov
21.3 mm (0.8 in)
5 November 1922
Dec
16.5 mm (0.6 in)
30 December 1922
Period of Record Coverage
1912 to 1954
Complete yearUnder 90 percent of days
34 years of record at Underwood 12 W, 1912 to 1954. 6 years have data for under 90 percent of days and are left out of rankings: 1912, 1922, 1948, 1951, 1952, 1954.
Cooler than the station meanWarmer than the station mean
One stripe for each of 26 complete years at Underwood 12 W, 1923 to 1953. Blue stripes are years cooler than the station's own mean of 5.4 C (41.7 F); red stripes are warmer. The coolest year was 1950, at 2.3 C (36.1 F), and the warmest was 1931, at 7.9 C (46.3 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Underwood 12 W as warming stripes, 1923 to 1953
Year
Annual mean temperature
Difference from the station mean
1923
5.7 C
+0.32 C
1925
5.6 C
+0.22 C
1926
5.9 C
+0.52 C
1927
4.4 C
-1.02 C
1928
5.9 C
+0.54 C
1929
3.9 C
-1.47 C
1930
5.9 C
+0.57 C
1931
7.9 C
+2.55 C
1932
5.2 C
-0.20 C
1933
6.0 C
+0.61 C
1934
7.1 C
+1.77 C
1935
4.7 C
-0.68 C
1936
4.7 C
-0.72 C
1937
4.8 C
-0.56 C
1938
6.0 C
+0.63 C
1939
6.1 C
+0.77 C
1940
5.7 C
+0.32 C
1941
6.3 C
+0.95 C
1942
5.5 C
+0.15 C
1943
4.9 C
-0.52 C
1944
5.3 C
-0.12 C
1945
4.3 C
-1.04 C
1946
5.5 C
+0.10 C
1949
4.7 C
-0.70 C
1950
2.3 C
-3.10 C
1953
5.4 C
+0.01 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1912 to 1954
Yearly extremes at Underwood 12 W: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
1936
38.3 C (101.0 F)
34
Coldest night (TNn)
-47.8 C (-54.0 F)
1936
-35.8 C (-32.5 F)
34
Wettest day (Rx1day)
81.3 mm (3.2 in)
1914
41.9 mm (1.6 in)
43
Wettest five days (Rx5day)
121.5 mm (4.8 in)
1918
55.4 mm (2.2 in)
41
Longest dry spell (CDD)
68 days
1913
34 days
43
Hottest day (TXx)
The hottest day of the year at Underwood 12 W, 1912 to 1954. The record is 45.6 C (114.1 F) in 1936, marked on the chart; the median year is 38.3 C (101.0 F).
Hottest day (TXx) at Underwood 12 W by year
Year
Hottest day (TXx)
1912
32.2 C (90.0 F)
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
36.7 C (98.1 F)
1923
36.7 C (98.1 F)
1924
36.1 C (97.0 F)
1925
38.9 C (102.0 F)
1926
39.4 C (102.9 F)
1927
34.4 C (93.9 F)
1928
35.6 C (96.1 F)
1929
42.2 C (108.0 F)
1930
39.4 C (102.9 F)
1931
42.8 C (109.0 F)
1932
38.9 C (102.0 F)
1933
41.1 C (106.0 F)
1934
40.6 C (105.1 F)
1935
39.4 C (102.9 F)
1936
45.6 C (114.1 F)
1937
39.4 C (102.9 F)
1938
36.1 C (97.0 F)
1939
39.4 C (102.9 F)
1940
37.8 C (100.0 F)
1941
42.8 C (109.0 F)
1942
37.8 C (100.0 F)
1943
34.4 C (93.9 F)
1944
36.1 C (97.0 F)
1945
36.1 C (97.0 F)
1946
38.9 C (102.0 F)
1947
40.0 C (104.0 F)
1948
38.9 C (102.0 F)
1949
41.1 C (106.0 F)
1950
36.1 C (97.0 F)
1951
36.7 C (98.1 F)
1952
36.7 C (98.1 F)
1953
36.1 C (97.0 F)
1954
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Underwood 12 W, 1912 to 1954. The record is -47.8 C (-54.0 F) in 1936, marked on the chart; the median year is -35.8 C (-32.5 F).
Coldest night (TNn) at Underwood 12 W by year
Year
Coldest night (TNn)
1912
-28.9 C (-20.0 F)
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
-33.9 C (-29.0 F)
1923
-35.6 C (-32.1 F)
1924
-37.2 C (-35.0 F)
1925
-30.0 C (-22.0 F)
1926
-30.0 C (-22.0 F)
1927
-37.8 C (-36.0 F)
1928
-38.9 C (-38.0 F)
1929
-41.1 C (-42.0 F)
1930
-37.2 C (-35.0 F)
1931
-26.1 C (-15.0 F)
1932
-31.7 C (-25.1 F)
1933
-42.8 C (-45.0 F)
1934
-36.1 C (-33.0 F)
1935
-41.1 C (-42.0 F)
1936
-47.8 C (-54.0 F)
1937
-38.3 C (-36.9 F)
1938
-35.6 C (-32.1 F)
1939
-40.0 C (-40.0 F)
1940
-32.8 C (-27.0 F)
1941
-31.7 C (-25.1 F)
1942
-35.6 C (-32.1 F)
1943
-38.9 C (-38.0 F)
1944
-40.0 C (-40.0 F)
1945
-33.9 C (-29.0 F)
1946
-35.0 C (-31.0 F)
1947
-33.3 C (-27.9 F)
1948
-32.2 C (-26.0 F)
1949
-41.7 C (-43.1 F)
1950
-43.3 C (-45.9 F)
1951
-39.4 C (-38.9 F)
1952
-20.6 C (-5.1 F)
1953
-30.0 C (-22.0 F)
1954
-37.2 C (-35.0 F)
Wettest day (Rx1day)
The wettest day of the year at Underwood 12 W, 1912 to 1954. The record is 81.3 mm (3.2 in) in 1914, marked on the chart; the median year is 41.9 mm (1.6 in).
Wettest day (Rx1day) at Underwood 12 W by year
Year
Wettest day (Rx1day)
1912
48.3 mm (1.9 in)
1913
25.1 mm (1.0 in)
1914
81.3 mm (3.2 in)
1915
45.0 mm (1.8 in)
1916
57.9 mm (2.3 in)
1917
11.4 mm (0.4 in)
1918
79.8 mm (3.1 in)
1919
17.8 mm (0.7 in)
1920
41.9 mm (1.6 in)
1921
42.7 mm (1.7 in)
1922
43.2 mm (1.7 in)
1923
31.0 mm (1.2 in)
1924
37.1 mm (1.5 in)
1925
58.4 mm (2.3 in)
1926
24.6 mm (1.0 in)
1927
47.5 mm (1.9 in)
1928
46.2 mm (1.8 in)
1929
31.5 mm (1.2 in)
1930
31.2 mm (1.2 in)
1931
36.6 mm (1.4 in)
1932
33.0 mm (1.3 in)
1933
27.9 mm (1.1 in)
1934
37.1 mm (1.5 in)
1935
32.8 mm (1.3 in)
1936
49.0 mm (1.9 in)
1937
44.5 mm (1.8 in)
1938
72.4 mm (2.9 in)
1939
47.0 mm (1.9 in)
1940
38.9 mm (1.5 in)
1941
44.5 mm (1.8 in)
1942
26.2 mm (1.0 in)
1943
55.1 mm (2.2 in)
1944
55.4 mm (2.2 in)
1945
18.3 mm (0.7 in)
1946
43.7 mm (1.7 in)
1947
33.5 mm (1.3 in)
1948
46.5 mm (1.8 in)
1949
29.5 mm (1.2 in)
1950
27.9 mm (1.1 in)
1951
47.8 mm (1.9 in)
1952
50.8 mm (2.0 in)
1953
25.9 mm (1.0 in)
1954
26.4 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Underwood 12 W, 1912 to 1954. The record is 121.5 mm (4.8 in) in 1918, marked on the chart; the median year is 55.4 mm (2.2 in).
Wettest five days (Rx5day) at Underwood 12 W by year
Year
Wettest five days (Rx5day)
1912
55.9 mm (2.2 in)
1913
26.4 mm (1.0 in)
1914
108.5 mm (4.3 in)
1915
72.1 mm (2.8 in)
1916
63.4 mm (2.5 in)
1917
17.3 mm (0.7 in)
1918
121.5 mm (4.8 in)
1919
45.5 mm (1.8 in)
1920
47.5 mm (1.9 in)
1921
75.2 mm (3.0 in)
1922
33.2 mm (1.3 in)
1923
n/a
1924
7.4 mm (0.29 in)
1925
14.7 mm (0.6 in)
1926
34.8 mm (1.4 in)
1927
86.8 mm (3.4 in)
1928
67.9 mm (2.7 in)
1929
4.6 mm (0.18 in)
1930
50.6 mm (2.0 in)
1931
n/a
1932
39.4 mm (1.6 in)
1933
58.6 mm (2.3 in)
1934
54.4 mm (2.1 in)
1935
50.8 mm (2.0 in)
1936
55.4 mm (2.2 in)
1937
92.2 mm (3.6 in)
1938
89.0 mm (3.5 in)
1939
59.2 mm (2.3 in)
1940
49.5 mm (1.9 in)
1941
89.7 mm (3.5 in)
1942
41.7 mm (1.6 in)
1943
111.5 mm (4.4 in)
1944
87.3 mm (3.4 in)
1945
24.9 mm (1.0 in)
1946
78.7 mm (3.1 in)
1947
83.0 mm (3.3 in)
1948
48.8 mm (1.9 in)
1949
54.4 mm (2.1 in)
1950
42.4 mm (1.7 in)
1951
58.3 mm (2.3 in)
1952
71.9 mm (2.8 in)
1953
44.7 mm (1.8 in)
1954
57.1 mm (2.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Underwood 12 W, 1912 to 1954. The record is 68 days in 1913, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Underwood 12 W by year
Year
Longest dry spell (CDD)
1912
37 days
1913
68 days
1914
32 days
1915
32 days
1916
39 days
1917
39 days
1918
52 days
1919
53 days
1920
50 days
1921
46 days
1922
29 days
1923
2 days
1924
16 days
1925
28 days
1926
27 days
1927
43 days
1928
14 days
1929
4 days
1930
2 days
1931
3 days
1932
21 days
1933
28 days
1934
43 days
1935
38 days
1936
26 days
1937
54 days
1938
29 days
1939
41 days
1940
20 days
1941
44 days
1942
44 days
1943
45 days
1944
35 days
1945
36 days
1946
53 days
1947
35 days
1948
46 days
1949
26 days
1950
31 days
1951
34 days
1952
33 days
1953
26 days
1954
24 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
26 years with a frost
Across 26 years with a frost, the median last spring frost at Underwood 12 W falls on 23 May and the median first autumn frost on 14 September, which leaves a median of 109 days between them.
Fitted over all years, the growing season changes by -2.6 days per decade at this station.
Frost dates and growing season at Underwood 12 W
Measure
Median, all years
Earliest period
Recent period (1923 to 1953)
Recent against earliest
Fitted trend
Last spring frost
23 May
n/a
23 May
n/a
+2.8 days per decade
First autumn frost
14 September
n/a
14 September
n/a
+0.3 days per decade
Growing days
109 days
n/a
109 days
n/a
-2.6 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Download the Data
Data for Underwood 12 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Underwood 12 W threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.